198 Sir D. Bruce and others. Try-panosome 



Table XV. — Distribution in respect to Length of 500 Individuals of the Trypanosome of 



Strain IX, Mkanthama. 





In microns. 



14. 



15. 



16. 



17. 



18. 



19. 



20. 



21. 



22. 



23. 



24. 



25. 



26. 



27. 



28. 



29. 



30. 



31. 



32. 



33. 



Totals ... 

 Percent- 

 ages 



1 



0-2 



9 

 1 -8 



22 

 4-4 



64 

 12-8 



79 

 15 -8 



70 

 14 -0 



40 

 8-0 



23 

 4-6 



21 

 4-2 



29 

 5-8 



23 

 4-6 



24 

 4-8 



23 

 4-6 



16 



3 2 



13 

 2 6 



15 



3 -0 



12 

 2-4 



9 

 1 -8 



5 

 1 



2 

 0-4 



Chart 4. — Curve representing the Distribution, by Percentages, in respect to Length, of 

 500 Individuals of the Trypanosome of Strain IX, Mkanthama, taken on nine 

 consecutive days from Eat 2386. 









M i 



c 



r o n s 

















20 | 21 



22 



2 : 





25 



26 





28 



29 



30 



31 



32 



33 









17 



























































IS 























































17 























































16 























































15 













































































































J) 











/ 













































£ 12 























































CTiti 



£<o 













































































































(= 9 























































U 8 













1 









































v 7 























































Q- 6 









i 













































5 



















































































































i 

















































2 













































































































Table XVI. — Percentage of Posterior-nuclear Forms found among the Short 

 and Stumpy Varieties of the Trypanosome of Strain IX, Mkanthama. 



Date. 



Experiment 

 No. 



Animal. 



Percentage among short 

 and stumpy forms. 



1913. 



May 18 2386 



„ 19 1 2386 



„ 20 I 2386 



„ 21 2386 



„ 22 ! 2386 



„ 23 2386 



„ 24 1 2386 



,, 25 1 2386 



„ 26 2386 



„ 28 2386 



Eat 



13 

 32 

 18 

 11 

 19 

 27 

 34 

 33 

 45 

 54 



Average 



28 -6 



